Globe-valve.



W. VIAL.

GLOBE VALVE. `AP PLIOATION FILED JULY 26,;910.

v1 f vPatented Feb. 6, 191,2.-

WITNESSES INVENTOR 'Q-.NM @M UNITED STATES .PATENT OFFICE.

WILLIAM VIAL, `0]? SWISSVALE, PENNSYLVANIA, vASSIGNOR 0F ONE-THIRD TOWIL- LIAIVI D. BERRY, OF NEW BRIGHTON, PENNSYLVANIA, AND ONE-THIRD JTOvJOHN VIAL, 0F BRADDOCK, PENNSYLVANIA.

GLOBE-VALVE.

To all whom t may concern:

Be itknown that I, WILLIAM VIAL, a resident of Swissvale, in the countyof Allegheny and State of Pennsylvania, have invented a new and usefulImprovement in Globe- Valves, of which the following is a speciication.

This invention relates to valves, and more particularly to high pressurecut o valves.

The object of the invention is to improve valves of the kind specifiedto render the same more durable and lessV liable to wear and derangementthan similar valves as heretofore constructed.

`The invention comprises the construction and arrangement of partshereinafter described and claimed.

In the accompanying drawings Figure l is a vertical section through aglobe valve showing my improvements applied thereto; and Figs. 2 and 3are horizontal sections taken respectively on the lines 2-2 and 3--3,Fig. 1.

In the drawings 1 represents the body of the valve which is of thegeneral form of a standard globe valve. This body is provided at one endwith the internally threaded inlet connection 2 and at its opposite endwith the internally threaded outlet connection 3. The body between theinlet and outlet connections is provided with t-he usual partition et inwhich is the valve seat 5, the latter being a separaterenewable memberor bushing ,having a threaded connection in an opening in the partition4, as shown, and provided with a passage 6 therethrough, said opening 6being preferably square or of other non-circular form to receive asuitable tool by means of which said seat can be screwed into and out ofthe opening in the partition. Said valve seat can be inserted andremoved through an opening 7 in the lower wall of the body, whichopening is closed by a threaded cap 8.

Coperating with the lower face of the valve seat 5 is the valve 9 whichcloses upwardly, that is with the pressure, so that the pressure'normally tends to hold said valve to its seat. The valve 9 is providedwith a stem 10 which extends up through an opening in the bonnet 114having a threaded connection in the upper wall of theV valve body. Theupper end of the bonnet is reduced and externally threaded to receivethe internally Specification of LettersPatent.

Application filed July 26, 1910.

Patented Feb. 6,1912.

Serial No. 573,924.

threaded cap 13 of the stuiling box, said cap acting to force the gland14 inwardly into a recess 1n the upper end of the bonnet so as tocompact the packing 15 around the valve stem.

The bonnet 11 is provided externally with a coarse square thread 16which is engaged by a similarly internally threaded ring 17.

centrally with an opening through which,

t-he upper end of the valve stem l0 projects. Said valve stem is securedto the disk 19 by means of a nut 20 and washer 21. Said valve stem maybe clamped tightly to said disk, or have such a loose connectiontherewith that the disk can rotate without rotating the valve.

The operation of the valve will be readily understood from the foregoingdescription. The large square threads on the bonnet and ring 17respectively are not subject to material wear, and hence have a longlife. Said threads also are of high pitch and this makes the opening andclosing of the valve rapid. The valve stem is perfectly smooth so thatit does not materially wear the stuffing box, and as a whole thearrangement is much more durable and lasting than with similar' valvesas heretofore constructed in which the small valve stem is externallythreaded and engages internal threads in the bonnet.

Vhat I claim is 1. In a valve the combination of a body provided with apassage therethrough, a seat in said body, an externally threadedprojection on the body and having no connection with said seat, a valvecooperating with the seat and provided with a stem extending through anopening in said externally threaded projection, a stuiiing box on saidprojection, an internally threaded ring directly engaging the externallythreaded projection, and an operating member located above said stuiiingbox and connected to said ring and operatively connected to said valvestem in a manner to leave the stuffing box-accessible.

2. In a valve the combination of a body provided with a passagetherethrough, a valve seat in said body, a valve coperating With saidseat and provided With a stem, a bonnet threaded into said body andprovided with an opening therethrough and with a stuffing box throughwhich said valve stem projects, said bonnet being independent of thevalve seat and threaded externally, an internally threaded ring directlyengaging the external threads on said bonnet, a hand wheel located abovesaid stuffing box and having the valve stem connected centrally thereto,and members connecting said hand Wheel and ring and leaving the stuftingbox accessible.

3. In a valve, the combination of a body Y, provided with a passagetherethrough, a

valve seat in said body, a valve coperating with said seat and providedWith a stem, a bonnet threaded into said body independently of the valveseat and provided With an opening and With a stuing box through whichsaid valve stem projects, saidbonnet being provided with coarse squareexternal threads, a ring provided with coarse square internal threadscooperating With the external'threads on the bonnet, a hand Wheellocated above said stuiiing boxand having the valve stem connectedcentrally thereto, and members connecting said hand Wheel and ring in amanner to leave the stufling box accessible.

In testimony Whereof,-I have hereunto set my hand. 4

WILLIAM VIAL.

Vitnesses: Y

JAS, L. WELDON, F. W. WINTER.

Copies .of this patent may be obtained for vcentsAeaeh,,iby;addressingthe Gommissioner of Patents,

Washington, D., G, l

